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Take off the top keyboard and power lid. Check for damage to the power flex cable. Plug in AC adapter. The port where connected power flex cable should have two or three pins. With small screwdriver try two-pin jumper shortly. Does not turn on again? All you need to replace the motherboard

Typically, the solder points on motherboard components are so small that only robots and people with mad skillz and small hands can solder the components onto the motherboard without shorting something out or overheating another adjacent, small component. As to whether the mobo should work without the battery bracket or not, that would likely vary from motherboard to motherboard, and no, it NOT something that is likely to be covered in the motherboard users manual. Only the designers of the motherboard would likely know the answer to that question, and they might not know for sure without trying it (they probably never thought to wonder on that question). It's definitely not *designed* to run without that bracket on there, but you may get lucky and it may work without it. But you probably just ruined your motherboard. Sorry to be the bearer of bad news.

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them they could be faulty if its a 40 pin ide it will be the first to failmake sure all leads that are attached to your drives dvd\cd have secure connections and are not faulty or just replace them they could be faulty

even something as small as an electrical extension or a faulty fan lead can cause this problemcomputer needs all of the data and power to travel through every working device and to have an end for a computer to be able work properly

a motherboard and a hard drive any leads between them will fail before your motherboard or your hard drive check all electrical extensions make sure they are securely seated even the cd/dvd drives need to have current go through make sure these devices are working

also check your computer ram modules and cmos battery to make sure they are dust free and securely seated and the battery has plenty of charge Cmos battery on some motherboards are soldered in

First you need to remove the laptop battery at the back side. Find some screw there and remove it locate the CMOS battery and jamper.

The BIOS password is
stored in CMOS memory that is maintained while the PC is powered off by
a small battery, which is attached to the motherboard. If you remove
this battery, all CMOS information (including the BIOS password) will
be lost. You will need to re-enter the correct CMOS setup information
to use the machine. The machines owner or user will most likely be
alarmed when it is discovered that the BIOS password has been deleted.

On some motherboards, the battery is soldered to the motherboard,
making it difficult to remove. If this is the case, you have another
alternative. Somewhere on the motherboard you should find a jumper that
will clear the BIOS password. If you have the motherboard
documentation, you will know where that jumper is.

If not, the jumper
may be labeled on the motherboard. If you are not fortunate enough for
either of these to be the case, you may be able to guess which jumper
is the correct jumper. This jumper is usually standing alone near the
battery. If you cannot locate this jumper, you might short both of the
points where the battery connects to the motherboard.

If you have forgotten your BIOS or system password, there are no software tricks or magical gimmicks that will get the password cleared. Laptops are different in that they are designed to not work with “backdoors” etc. for security reasons. There is one true way that works most of the time and that is hardware.
The Cmos (RTC) battery that is mounted on the motherboard in most cases holds the key, if your motherboard has the battery that is connected to the motherboard by using a two wire socket that plugs into the MOBO, then here is the procedure.
On the motherboard where the battery plugs into, you will see two pins sticking straight up, these engage the plug on the battery side. These two pins have to be “shorted” and then the motherboard powered up for approx. 30 seconds, then power down the system and replace the Cmos battery and reboot. Your password problem should be cleared up. The best way to “short” the pins is get another cmos battery and cut the wires from the battery part, bare the ends and twist together, this will short the pins. Make sure you tape the connection good on the jumper you just made….don’t want to touch anything else with powered up bare wires. Below is the link to your service manual that will point everything out to you. Good luck.

You need to located the jumper on your motherboard. Usually located near the battery. Just remove the jumper from the current location and place onto the other pins. You should see 3 pins after you remove the jumper. Pins 1 & 2 might of had the jumper on it. You then need to place the jumper on pins 2 & 3. Do this with the power off. Wait a few seconds and them place the jumper back on pins 1 & 2 and restart your computer.

you will have to reset the bios.open the system unit, locate a small battery, near the battery, there should be a small jumper. pull the jumper upwards, you will get a small square plastic cover. now turn on the pc, and your bios password is reset.

Acer TravelMate 225X solution:The battery type CR2032 (Lithium, 3V, 20mm/3.2mm) is the same as mentioned in solution #1 but you must use a cell with connected wires and a 3-pin connector. It is hard to buy. A workaround is (1) to use the battery with connected tabs or (2) the battery holder (maybe BH1060 or similar). Original wire and connector from old battery must be cut out and soldered to new battery tabs or holder pins. Remember polarity - note the wire colors.

The battery position is under keyboard in the central position between the PCMCIA slot and the CD-ROM slot. Remove the strip cover near the display, slide the keyboard in the direction of display and lift it up.